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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-06-30 17:50:44 -1000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-06-30 17:50:44 -1000 |
| commit | 665159e246749578d4e4bfe106ee3b74edcdab18 (patch) | |
| tree | 42f7d7c0f347b318766f665a22327a671f94a4a0 /samples | |
| parent | dc59e4fea9d83f03bad6bddf3fa2e52491777482 (diff) | |
| parent | a369299c3f785cf556bbef2de2db0aa2d294c4c9 (diff) | |
| download | linux-master.tar.gz | |
Merge tag 'probes-fixes-v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-traceHEADmaster
Pull probes fixes from Masami Hiramatsu:
"fprobe fixes and spelling typos:
- Fix NULL pointer dereference in fprobe_fgraph_entry(). Prevent
general protection faults by checking shadow-stack reservation
bounds. Skip mid-flight registered fprobes that were not counted
during sizing.
eprobe: fix string pointer extraction
- Correct the casting of string pointers read from the ringbuffer to
prevent truncation of base event pointer variables when
dereferencing FILTER_PTR_STRING fields.
tracing/probes: clean up argument parsing and BTF helper logic
- Make the $ prefix mandatory for comm access: Require the $ prefix
for special fetcharg variables like $comm and $COMM, preventing
naming conflicts with regular BTF-based event fields.
- Fix double addition of offset for @+FOFFSET: Clear the temporary
offset variable after setting the FETCH_OP_FOFFS instruction to
avoid applying the offset multiple times.
- Remove WARN_ON_ONCE from parse_btf_arg: Prevent triggering a kernel
warning via user-space input when creating a kprobe event on a raw
address.
- Fix typo in a log message: Correct a spelling error ("$-valiable")
in trace probe log messages.
samples/trace_events: improve error checking
- Validate the thread pointer returned from kthread_run() in the
trace events sample code to properly handle thread creation
failures"
* tag 'probes-fixes-v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing/probes: Make the $ prefix mandatory for comm access
tracing/fprobe: Fix NULL pointer dereference in fprobe_fgraph_entry()
tracing/probes: Fix double addition of offset for @+FOFFSET
tracing: eprobe: read the complete FILTER_PTR_STRING pointer
tracing/events: Fix to check the simple_tsk_fn creation
tracing/probes: Remove WARN_ON_ONCE from parse_btf_arg
tracing: probes: fix typo in a log message
Diffstat (limited to 'samples')
| -rw-r--r-- | samples/trace_events/trace-events-sample.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/samples/trace_events/trace-events-sample.c b/samples/trace_events/trace-events-sample.c index ecc7db237f2ef..0b7a6efdb247a 100644 --- a/samples/trace_events/trace-events-sample.c +++ b/samples/trace_events/trace-events-sample.c @@ -107,6 +107,10 @@ int foo_bar_reg(void) * for consistency sake, we still take the thread_mutex. */ simple_tsk_fn = kthread_run(simple_thread_fn, NULL, "event-sample-fn"); + if (IS_ERR_OR_NULL(simple_tsk_fn)) { + pr_err("Failed to create simple_thread_fn\n"); + simple_tsk_fn = NULL; + } out: mutex_unlock(&thread_mutex); return 0; |